Pennzoil 1-Qt. 10W40 High Mileage Vehicle Motor Oil. Specially formulated for vehicles with more than 75,000 miles, this oil features active cleansing agents that continuously prevent dirt and contaminants from turning into performance-robbing deposits, keeping your engine clean and responsive. Blended to higher viscosity and lower volatility than conventional oils, it reduces oil consumption due to burn-off, while the special seal conditioning agent helps minimize leaks from worn or stiff seals. Actively keeping high mileage engines clean, this oil extends engine life, conditions seals, prevents leaks and oil burn-off, and provides enhanced protection for worn engine parts.